Rin

Backstory

No one knows Rin's full name and everyone doubt that that's not her real name too, but even the teachers are tight lip about this subject. However, she's pretty good at Potions. For some reason, she loved putting rocks, flowers, or crystals in a circular pattern all over the field and no one is allowed near them.

One rumor started she can talk to plants and that the plant replied, but it was stupid rumor and it died fast.

A business minded woman. You want someone to steal something from another house? She's your girl, but there will always be a price for every favor you ask. Maybe money or something she fancy. An eye for an eye. Equivalent exchange.

Pro tip: If she ask; don't give her your name.